I'm on a mission to scrape the previous owner's paint slop off my windows. I started out using this:
It's a $3 razor blade scraper and is a wonderful all-around tool. We use it all the time.
Yesterday I bought this:
It's a Kobalt 5-in-1 painter's tool. I do not know all five functions, but I can tell you that it is great for paint scraping off of glass. Really great. And now I'm getting back to work.